Pulmonary edema is an accumulation of fluid within the parenchyma and air spaces of the lungs. Classically it is cardiogenic (left ventricular) but fluid may also accumulate due to damage to the lung.
Crystal Light sells a Metabolism-Plus product designed to increase your metabolism. The Green Tea Peach Mango flavored drink has 25 mg of caffeine per 8-oz. serving. Crystal Light also sells a variety of tea flavors. Made with tea, which contains caffeine, these products contain 10 to 15 mg of caffeine per 8-oz. serving, except for those that are labeled as caffeine free.
Snapple's  Red Tea  line is made with rooibos and are naturally caffeine free. Snapple's Diet Green Teas contain 60 mg of caffeine per bottle, while their regular Green Teas contain 30 mg of caffeine per bottle and their White Teas contain less than one mg of caffeine per serving.